164530-20-5

Upstream product

• 58479-61-1 tert-butylchlorodiphenylsilane 
• 164530-17-0 Acetic acid (2S,4aS,4bS,6R,6aR,6bR,9aS,10bR,12aS)-2-acetoxy-8-((R)-1-hydroxy-3-methyl-but-3-enyl)-4a,6a,7-trimethyl-6b-trimethylsilanyloxy-2,3,4,4a,4b,5,6,6a,6b,9a,10b,11,12,12a-tetradecahydro-1H-9-oxa-pentaleno[2,1-a]phenanthren-6-yl ester 
• 5821-04-5 3β,12β-diacetoxy-5α-pregn-16-en-20-one 
• 161254-90-6 Acetic acid (3S,5S,8R,9S,10S,12R,13R,14S,15S,16S,17S)-3-acetoxy-17-acetyl-15-bromo-10,13-dimethyl-hexadecahydro-20-oxa-cyclopropa[16,17]cyclopenta[a]phenanthren-12-yl ester 
• 161255-02-3 Acetic acid (3S,5S,8R,9S,10S,12R,13R,16S,17S)-3-acetoxy-17-acetyl-16-hydroxy-10,13-dimethyl-17-trimethylsilanyloxy-2,3,4,5,6,7,8,9,10,11,12,13,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-12-yl ester 
• 161254-97-3 Acetic acid (3S,5S,8R,9S,10S,12R,13R,14S,15S,16S,17S)-3-acetoxy-17-acetyl-15,16-dihydroxy-10,13-dimethyl-17-trimethylsilanyloxy-hexadecahydro-cyclopenta[a]phenanthren-12-yl ester 
• 161254-88-2 Acetic acid (2S,4aS,4bS,6R,6aR,6bR,9aS,10bR,12aS)-2-acetoxy-8-formyl-4a,6a,7-trimethyl-6b-trimethylsilanyloxy-2,3,4,4a,4b,5,6,6a,6b,9a,10b,11,12,12a-tetradecahydro-1H-9-oxa-pentaleno[2,1-a]phenanthren-6-yl ester 
• 161254-98-4 C₂₈H₄₄O₁₀SSi 
• 161255-03-4 (2S,4aS,4bS,6R,6aR,6bR,9aS,10bR,12aS)-2,6-Diacetoxy-4a,6a,7-trimethyl-6b-trimethylsilanyloxy-2,3,4,4a,4b,5,6,6a,6b,9a,10b,11,12,12a-tetradecahydro-1H-9-oxa-pentaleno[2,1-a]phenanthrene-8-carboxylic acid ethyl ester 
• 223260-35-3 C₃₆H₅₉O₁₂PSi 
• 164530-18-1 Acetic acid (2S,4aS,4bS,6R,6aR,6bR,9aS,10bR,12aS)-2-acetoxy-8-((S)-1-hydroxy-3-methyl-but-3-enyl)-4a,6a,7-trimethyl-6b-trimethylsilanyloxy-2,3,4,4a,4b,5,6,6a,6b,9a,10b,11,12,12a-tetradecahydro-1H-9-oxa-pentaleno[2,1-a]phenanthren-6-yl ester 
• 161254-95-1 Acetic acid (3S,5S,8R,9S,10S,12R,13R,14S,17R)-3-acetoxy-17-acetyl-17-hydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,10,11,12,13,14,17-tetradecahydro-1H-cyclopenta[a]phenanthren-12-yl ester 
• 161254-96-2 Acetic acid (3S,5S,8R,9S,10S,12R,13R,14S,17R)-3-acetoxy-17-acetyl-10,13-dimethyl-17-trimethylsilanyloxy-2,3,4,5,6,7,8,9,10,11,12,13,14,17-tetradecahydro-1H-cyclopenta[a]phenanthren-12-yl ester 
• 223260-30-8 C₂₈H₄₄O₉SSi 

Relevant academic research and scientific papers

Synthesis of the north 1 unit of the cephalostatin family from hecogenin acetate 1

Hecogenin acetate (1) was converted to North 1 azidoketone 5 involving several key transformations: (1) conversion of cyclic sulfate 33b to allylic alcohol 40 via Reich iodoso olefination; (2) E-ring annulation via intermolecular oxygen alkylation of high